Combined heat exchanger

Abstract

In a combined heat exchanger including first and second heat exchanging portions, a pair of first and second header tanks are connected to two longitudinal ends of first and second tubes of the first and second heat exchanging portions. One end of a pipe member is connected to the first header tank at a position communicating with the second heat exchanging portion, and the other end thereof extends toward the second header tank. A side plate is connected to the outermost second tube in a tube stacking direction and to the first and second header tanks. Furthermore, a divided portion is provided to divide the side plate into a first part connected to the first header tank and a second part connected to the second header tank, and the pipe member is fixed to the side plate at a position between the divided portion and the first header tank.

1 . A combined heat exchanger comprising:
 a first heat exchanging portion configured to cool a first fluid by performing a heat exchange with air, the first heat exchanging portion including a plurality of first tubes stacked in a stacking direction, in which the first fluid flows;   a second heat exchanging portion configured to cool a second fluid by performing a heat exchange with air, the second heat exchanging portion including a plurality of second tubes stacked in the stacking direction, in which the second fluid flows, wherein the second fluid having a temperature different from that of the first fluid;   a pair of first and second header tanks connected to both longitudinal end portions of the first and second tubes to extend in the stacking direction;   a pipe member having one end connected to the first header tank at a position communicating with the second heat exchanging portion, and the other end extending toward the second header tank;   a side plate connected to the outermost second tube in the stacking direction and to the first and second header tanks; and   a fixing member configured to fix the pipe member to the side plate, wherein   the side plate has a divided portion configured to divide the side plate into a first part connected to the first header tank and a second part connected to the second header tank, and   the pipe member is fixed to the side plate by the fixing member at a position between the divided portion and the first header tank.   
   
   
       2 . The combined heat exchanger according to  claim 1 , wherein
 the first heat exchanger is a refrigerant cooling portion in which a refrigerant of a refrigerant cycle flows to be cooled; and   the second heat exchanger is an oil cooler configured to cool oil for a device mounted on a vehicle.   
   
   
       3 . The combined heat exchanger according to  claim 1 , wherein
 the first header tank is configured to distribute the second fluid flowing from the pipe member into the second tubes, and   the second header tank is configured to collect the second fluid flowing out of the second tubes.   
   
   
       4 . The combined heat exchanger according to  claim 1 , wherein
 the fixing member includes a receiving portion and a cover portion which are configured to pinch and fix the pipe member, and   the side plate has a through hole into which an engagement claw of the receiving portion of the fixing member is engaged.   
   
   
       5 . The combined heat exchanger according to  claim 1 , further comprising
 a partition plate located between the first tube and the second tube adjacent to each other in the stacking direction so as to partition the first heat exchanging portion and the second heat exchanging portion from each other,   wherein the second header tank has a cutout portion at a position corresponding to the partition plate in the stacking direction.   
   
   
       6 . The combined heat exchanger according to  claim 5 , wherein each of the first and second header tanks is partitioned into two parts respectively corresponding to the first heat exchanging portion and the second heat exchanging portion at a position where the partition plate is located in the stacking direction. 
   
   
       7 . The combined heat exchanger according to  claim 1 , wherein
 the pipe member further has an extending portion extending from the one end of the first header tank toward the second header tank, approximately in parallel with the side plate at a position adjacent to the side plate, and   the extending portion of the pipe member is fixed to the side plate by using the fixing member.